Scaling tests of the cross section for deeply virtual compton scattering
- Munoz Camacho, C.
- Camsonne, A.
- Mazouz, M.
- Ferdi, C.
- Gavalian, G.
- Kuchina, E.
- Amarian, M.
- Aniol, K.A.
- Beaumel, M.
- Benaoum, H.
- Bertin, P.Y.
- Brossard, M.
- Chen, J.-P.
- Chudakov, E.
- Craver, B.
- Cusanno, F.
- De Jager, C.W.
- Deur, A.
- Feuerbach, R.
- Fieschi, J.-M.
- Frullani, S.
- Garçon, M.
- Garibaldi, F.
- Gayou, O.
- Gilman, R.
- Gomez, J.
- Gueye, P.
- Guichon, P.A.M.
- Guillon, B.
- Hansen, O.
- Hayes, D.
- Higinbotham, D.
- Holmstrom, T.
- Hyde-Wright, C.E.
- Ibrahim, H.
- Igarashi, R.
- Jiang, X.
- Jo, H.S.
- Kaufman, L.
- Kelleher, A.
- Kolarkar, A.
- Kumbartzki, G.
- Laveissiere, G.
- LeRose, J.J.
- Lindgren, R.
- Liyanage, N.
- Lu, H.-J.
- Margaziotis, D.J.
- Meziani, Z.-E.
- McCormick, K.
- Michaels, R.
- Michel, B.
- Moffit, B.
- Monaghan, P.
- Nanda, S.
- Nelyubin, V.
- Potokar, M.
- Qiang, Y.
- Ransome, R.D.
- Réal, J.S.
- Reitz, B.
- Roblin, Y.
- Roche, J.
- Sabatié, F.
- Saha, A.
- Sirca, S.
- Slifer, K.
- Solvignon, P.
- Subedi, R.
- Sulkosky, V.
- Ulmer, P.E.
- Voutier, E.
- Wang, K.
- Weinstein, L.B.
- Wojtsekhowski, B.
- Zheng, X.
- Zhu, L.
DOIAbstract
6 pages, 5 figures, 2 tablesWe present the first measurements of \vec{e}p->epg cross section in the deep virtual Compton scattering (DVCS) regime and the valence quark region (x_{Bj}=0.36). From JLab E00-110, we extract the imaginary part of the Bethe-Heitler (BH)--DVCS interference terms, to order twist-3 for Q^2 = 1.5, 1.9, and 2.3 GeV^2, and the real part of the BH-DVCS interference terms at Q^2 = 2.3 GeV^2. We present the first model-independent measurement of linear combinations of generalized parton distributions (GPDs) and GPD integrals up to twist-3 approximation. The validity of this approximation is strongly supported by the absence of Q^2-variation of the extracted terms -- thereby constraining the size of higher twist contributi...
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